./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-time-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-time-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55dce27fdc9c44ff408174badf0a943270d2adadc96357bb37463f058a6a7cee --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:20:53,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:20:53,920 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:20:53,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:20:53,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:20:53,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:20:53,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:20:53,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:20:53,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:20:53,944 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:20:53,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:20:53,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:20:53,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:20:53,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:20:53,946 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:20:53,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:20:53,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:20:53,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:20:53,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:20:53,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:20:53,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:20:53,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:20:53,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:20:53,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:20:53,950 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:20:53,951 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:20:53,951 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:20:53,951 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:20:53,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:20:53,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:20:53,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:20:53,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:20:53,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:20:53,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:20:53,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:20:53,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:20:53,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:20:53,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:20:53,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:20:53,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:20:53,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:20:53,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:20:53,958 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55dce27fdc9c44ff408174badf0a943270d2adadc96357bb37463f058a6a7cee [2024-11-12 08:20:54,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:20:54,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:20:54,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:20:54,227 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:20:54,228 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:20:54,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-time-subst.wvr.c [2024-11-12 08:20:55,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:20:55,892 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:20:55,893 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-subst.wvr.c [2024-11-12 08:20:55,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aa9631c0/f6952aec915245259c6ee27255281173/FLAG76c28ef82 [2024-11-12 08:20:55,918 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aa9631c0/f6952aec915245259c6ee27255281173 [2024-11-12 08:20:55,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:20:55,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:20:55,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:20:55,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:20:55,929 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:20:55,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:20:55" (1/1) ... [2024-11-12 08:20:55,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@751e7d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:55, skipping insertion in model container [2024-11-12 08:20:55,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:20:55" (1/1) ... [2024-11-12 08:20:55,960 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:20:56,199 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-subst.wvr.c[2918,2931] [2024-11-12 08:20:56,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:20:56,234 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:20:56,299 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-subst.wvr.c[2918,2931] [2024-11-12 08:20:56,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:20:56,323 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:20:56,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56 WrapperNode [2024-11-12 08:20:56,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:20:56,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:20:56,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:20:56,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:20:56,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,374 INFO L138 Inliner]: procedures = 22, calls = 24, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 207 [2024-11-12 08:20:56,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:20:56,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:20:56,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:20:56,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:20:56,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,392 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,415 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 08:20:56,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,422 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:20:56,430 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:20:56,430 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:20:56,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:20:56,431 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (1/1) ... [2024-11-12 08:20:56,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:20:56,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:20:56,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 08:20:56,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 08:20:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:20:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:20:56,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:20:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:20:56,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:20:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 08:20:56,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 08:20:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:20:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:20:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:20:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:20:56,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:20:56,518 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:20:56,614 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:20:56,616 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:20:56,924 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:20:56,924 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:20:57,329 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:20:57,330 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-12 08:20:57,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:20:57 BoogieIcfgContainer [2024-11-12 08:20:57,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:20:57,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:20:57,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:20:57,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:20:57,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:20:55" (1/3) ... [2024-11-12 08:20:57,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572adc6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:20:57, skipping insertion in model container [2024-11-12 08:20:57,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:56" (2/3) ... [2024-11-12 08:20:57,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572adc6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:20:57, skipping insertion in model container [2024-11-12 08:20:57,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:20:57" (3/3) ... [2024-11-12 08:20:57,341 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-subst.wvr.c [2024-11-12 08:20:57,359 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:20:57,360 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:20:57,360 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:20:57,426 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 08:20:57,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 71 flow [2024-11-12 08:20:57,501 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-11-12 08:20:57,502 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:20:57,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 0/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-12 08:20:57,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 25 transitions, 71 flow [2024-11-12 08:20:57,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 21 transitions, 60 flow [2024-11-12 08:20:57,518 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:20:57,530 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@68ae2c0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:20:57,530 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 08:20:57,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:20:57,547 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-11-12 08:20:57,547 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:20:57,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:20:57,548 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:20:57,550 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:20:57,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:20:57,559 INFO L85 PathProgramCache]: Analyzing trace with hash -538905494, now seen corresponding path program 1 times [2024-11-12 08:20:57,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:20:57,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126792415] [2024-11-12 08:20:57,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:57,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:20:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:20:59,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:20:59,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126792415] [2024-11-12 08:20:59,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126792415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:20:59,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:20:59,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:20:59,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132678274] [2024-11-12 08:20:59,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:20:59,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:20:59,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:20:59,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:20:59,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:20:59,335 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-12 08:20:59,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:20:59,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:20:59,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-12 08:20:59,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:20:59,752 INFO L124 PetriNetUnfolderBase]: 178/337 cut-off events. [2024-11-12 08:20:59,752 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-12 08:20:59,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 337 events. 178/337 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1314 event pairs, 46 based on Foata normal form. 1/335 useless extension candidates. Maximal degree in co-relation 575. Up to 110 conditions per place. [2024-11-12 08:20:59,759 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 30 selfloop transitions, 2 changer transitions 8/44 dead transitions. [2024-11-12 08:20:59,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 210 flow [2024-11-12 08:20:59,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:20:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:20:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-12 08:20:59,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.608 [2024-11-12 08:20:59,775 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 60 flow. Second operand 5 states and 76 transitions. [2024-11-12 08:20:59,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 210 flow [2024-11-12 08:20:59,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 182 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 08:20:59,783 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 63 flow [2024-11-12 08:20:59,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=63, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2024-11-12 08:20:59,790 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-11-12 08:20:59,791 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 63 flow [2024-11-12 08:20:59,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:20:59,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:20:59,791 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:20:59,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:20:59,792 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:20:59,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:20:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash 407022892, now seen corresponding path program 2 times [2024-11-12 08:20:59,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:20:59,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102931527] [2024-11-12 08:20:59,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:59,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:20:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:00,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:00,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102931527] [2024-11-12 08:21:00,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102931527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:00,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:00,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:21:00,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300475541] [2024-11-12 08:21:00,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:00,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:21:00,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:00,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:21:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:21:00,743 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-12 08:21:00,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:21:00,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:00,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-12 08:21:00,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:01,043 INFO L124 PetriNetUnfolderBase]: 194/367 cut-off events. [2024-11-12 08:21:01,044 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-11-12 08:21:01,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 367 events. 194/367 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1578 event pairs, 24 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 839. Up to 151 conditions per place. [2024-11-12 08:21:01,047 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 32 selfloop transitions, 2 changer transitions 12/50 dead transitions. [2024-11-12 08:21:01,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 234 flow [2024-11-12 08:21:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:21:01,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:21:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-11-12 08:21:01,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-12 08:21:01,050 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 63 flow. Second operand 5 states and 80 transitions. [2024-11-12 08:21:01,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 234 flow [2024-11-12 08:21:01,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 50 transitions, 227 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 08:21:01,052 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 73 flow [2024-11-12 08:21:01,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2024-11-12 08:21:01,053 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-11-12 08:21:01,053 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 73 flow [2024-11-12 08:21:01,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:21:01,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:01,054 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:01,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:21:01,054 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:01,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash 921231556, now seen corresponding path program 3 times [2024-11-12 08:21:01,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:01,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528485219] [2024-11-12 08:21:01,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:01,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:01,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:01,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528485219] [2024-11-12 08:21:01,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528485219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:01,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:01,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:21:01,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049748076] [2024-11-12 08:21:01,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:01,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:21:01,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:01,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:21:01,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:21:01,865 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-12 08:21:01,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:21:01,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:01,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-12 08:21:01,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:02,091 INFO L124 PetriNetUnfolderBase]: 153/301 cut-off events. [2024-11-12 08:21:02,091 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2024-11-12 08:21:02,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 301 events. 153/301 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1141 event pairs, 35 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 745. Up to 109 conditions per place. [2024-11-12 08:21:02,097 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 31 selfloop transitions, 3 changer transitions 8/46 dead transitions. [2024-11-12 08:21:02,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 229 flow [2024-11-12 08:21:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:21:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:21:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-12 08:21:02,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.616 [2024-11-12 08:21:02,100 INFO L175 Difference]: Start difference. First operand has 36 places, 22 transitions, 73 flow. Second operand 5 states and 77 transitions. [2024-11-12 08:21:02,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 229 flow [2024-11-12 08:21:02,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 210 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-12 08:21:02,105 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 84 flow [2024-11-12 08:21:02,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2024-11-12 08:21:02,106 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-11-12 08:21:02,106 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 84 flow [2024-11-12 08:21:02,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:21:02,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:02,107 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:02,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:21:02,107 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:02,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash -534392932, now seen corresponding path program 4 times [2024-11-12 08:21:02,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:02,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116388277] [2024-11-12 08:21:02,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:02,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:03,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:03,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116388277] [2024-11-12 08:21:03,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116388277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:03,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:03,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:21:03,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329886660] [2024-11-12 08:21:03,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:03,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:21:03,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:03,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:21:03,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:21:03,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-12 08:21:03,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:21:03,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:03,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-12 08:21:03,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:03,359 INFO L124 PetriNetUnfolderBase]: 160/316 cut-off events. [2024-11-12 08:21:03,359 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2024-11-12 08:21:03,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 316 events. 160/316 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1287 event pairs, 28 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 840. Up to 137 conditions per place. [2024-11-12 08:21:03,362 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 30 selfloop transitions, 2 changer transitions 12/48 dead transitions. [2024-11-12 08:21:03,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 251 flow [2024-11-12 08:21:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:21:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:21:03,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-11-12 08:21:03,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-11-12 08:21:03,366 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 84 flow. Second operand 5 states and 78 transitions. [2024-11-12 08:21:03,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 251 flow [2024-11-12 08:21:03,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 244 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 08:21:03,370 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 93 flow [2024-11-12 08:21:03,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2024-11-12 08:21:03,372 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-11-12 08:21:03,373 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 93 flow [2024-11-12 08:21:03,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:21:03,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:03,374 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:03,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:21:03,374 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:03,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:03,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1865595054, now seen corresponding path program 5 times [2024-11-12 08:21:03,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:03,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117518941] [2024-11-12 08:21:03,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:03,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:04,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:04,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117518941] [2024-11-12 08:21:04,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117518941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:04,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:04,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:21:04,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272338564] [2024-11-12 08:21:04,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:04,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:21:04,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:04,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:21:04,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:21:04,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-12 08:21:04,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:21:04,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:04,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-12 08:21:04,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:04,373 INFO L124 PetriNetUnfolderBase]: 111/226 cut-off events. [2024-11-12 08:21:04,375 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2024-11-12 08:21:04,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 226 events. 111/226 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 788 event pairs, 21 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 642. Up to 69 conditions per place. [2024-11-12 08:21:04,378 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 20 selfloop transitions, 1 changer transitions 19/44 dead transitions. [2024-11-12 08:21:04,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 230 flow [2024-11-12 08:21:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:21:04,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:21:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-11-12 08:21:04,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-12 08:21:04,380 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 93 flow. Second operand 5 states and 75 transitions. [2024-11-12 08:21:04,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 230 flow [2024-11-12 08:21:04,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 218 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-12 08:21:04,387 INFO L231 Difference]: Finished difference. Result has 43 places, 21 transitions, 73 flow [2024-11-12 08:21:04,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=43, PETRI_TRANSITIONS=21} [2024-11-12 08:21:04,389 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-11-12 08:21:04,390 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 21 transitions, 73 flow [2024-11-12 08:21:04,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:21:04,390 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:04,390 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:04,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 08:21:04,391 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:04,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:04,393 INFO L85 PathProgramCache]: Analyzing trace with hash 104390900, now seen corresponding path program 6 times [2024-11-12 08:21:04,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:04,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537272592] [2024-11-12 08:21:04,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:04,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:05,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:05,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537272592] [2024-11-12 08:21:05,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537272592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:05,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:05,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:21:05,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304742203] [2024-11-12 08:21:05,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:05,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:21:05,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:05,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:21:05,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:21:05,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-11-12 08:21:05,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 21 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:21:05,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:05,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-11-12 08:21:05,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:05,298 INFO L124 PetriNetUnfolderBase]: 52/115 cut-off events. [2024-11-12 08:21:05,298 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-12 08:21:05,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 115 events. 52/115 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 292 event pairs, 10 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 327. Up to 54 conditions per place. [2024-11-12 08:21:05,299 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-11-12 08:21:05,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 147 flow [2024-11-12 08:21:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:21:05,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:21:05,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-12 08:21:05,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.496 [2024-11-12 08:21:05,300 INFO L175 Difference]: Start difference. First operand has 43 places, 21 transitions, 73 flow. Second operand 5 states and 62 transitions. [2024-11-12 08:21:05,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 147 flow [2024-11-12 08:21:05,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 133 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-12 08:21:05,302 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-11-12 08:21:05,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-11-12 08:21:05,302 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-11-12 08:21:05,303 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-11-12 08:21:05,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:21:05,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-12 08:21:05,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-12 08:21:05,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-12 08:21:05,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-12 08:21:05,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:21:05,307 INFO L421 BasicCegarLoop]: Path program histogram: [6] [2024-11-12 08:21:05,310 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 08:21:05,310 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 08:21:05,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:21:05 BasicIcfg [2024-11-12 08:21:05,315 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 08:21:05,316 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 08:21:05,316 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 08:21:05,316 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 08:21:05,317 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:20:57" (3/4) ... [2024-11-12 08:21:05,319 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 08:21:05,322 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-12 08:21:05,322 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-12 08:21:05,322 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-12 08:21:05,326 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 78 nodes and edges [2024-11-12 08:21:05,326 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-12 08:21:05,327 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-12 08:21:05,327 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-12 08:21:05,418 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 08:21:05,418 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 08:21:05,419 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 08:21:05,419 INFO L158 Benchmark]: Toolchain (without parser) took 9497.67ms. Allocated memory was 159.4MB in the beginning and 394.3MB in the end (delta: 234.9MB). Free memory was 105.1MB in the beginning and 262.7MB in the end (delta: -157.5MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. [2024-11-12 08:21:05,419 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory is still 55.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 08:21:05,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.99ms. Allocated memory is still 159.4MB. Free memory was 104.7MB in the beginning and 127.2MB in the end (delta: -22.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-12 08:21:05,420 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.38ms. Allocated memory is still 159.4MB. Free memory was 127.2MB in the beginning and 125.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:21:05,421 INFO L158 Benchmark]: Boogie Preprocessor took 53.71ms. Allocated memory is still 159.4MB. Free memory was 125.1MB in the beginning and 122.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 08:21:05,421 INFO L158 Benchmark]: RCFGBuilder took 900.48ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 122.3MB in the beginning and 184.3MB in the end (delta: -62.0MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. [2024-11-12 08:21:05,421 INFO L158 Benchmark]: TraceAbstraction took 7982.07ms. Allocated memory was 226.5MB in the beginning and 394.3MB in the end (delta: 167.8MB). Free memory was 183.2MB in the beginning and 267.9MB in the end (delta: -84.7MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2024-11-12 08:21:05,422 INFO L158 Benchmark]: Witness Printer took 102.84ms. Allocated memory is still 394.3MB. Free memory was 267.9MB in the beginning and 262.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-12 08:21:05,423 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory is still 55.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 399.99ms. Allocated memory is still 159.4MB. Free memory was 104.7MB in the beginning and 127.2MB in the end (delta: -22.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.38ms. Allocated memory is still 159.4MB. Free memory was 127.2MB in the beginning and 125.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.71ms. Allocated memory is still 159.4MB. Free memory was 125.1MB in the beginning and 122.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 900.48ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 122.3MB in the beginning and 184.3MB in the end (delta: -62.0MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7982.07ms. Allocated memory was 226.5MB in the beginning and 394.3MB in the end (delta: 167.8MB). Free memory was 183.2MB in the beginning and 267.9MB in the end (delta: -84.7MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. * Witness Printer took 102.84ms. Allocated memory is still 394.3MB. Free memory was 267.9MB in the beginning and 262.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 604 IncrementalHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 604 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 4120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 08:21:05,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE